Home / 10,355.80-15,433.78-10,339.33

Finding the Fourth Proportional to 10,355.80, 15,433.78 and 10,339.33

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Solution

The fourth proportional to 10,355.80, 15,433.78 and 10,339.33 is: 15,409.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,355.80 : 15,433.78 = 10,339.33 : x
  2. Step 2: Convert to fraction form
    10,355.80/15,433.78 = 10,339.33/x
  3. Step 3: Cross multiply
    10,355.80x = 15,433.78 × 10,339.33
  4. Step 4: Simplify right side
    10,355.80x = 159,574,815.70
  5. Step 5: Solve for x
    x = 159,574,815.70/10,355.80
  6. Step 6: Final answer
    x = 15,409.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.